What were the key findings of the declassified 1977 crash report?

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Key Findings of the Declassified 1977 Investigation Report on the "Double Six" Tragedy

The declassified 1977 investigation report into the "Double Six" tragedy concluded that there was no evidence of sabotage, fire, or explosion. The report, completed on January 25, 1977, found that the Nomad N22B aircraft was maintained according to schedule, the pilot was licensed, and the load was within the prescribed weight limit. However, it identified significant issues related to the aircraft's loading and the pilot's condition as the primary causes of the crash.
Incorrect Aircraft Loading Beyond Approved Limits

A critical finding of the investigation was that the aircraft was incorrectly loaded for the flight, resulting in its center of gravity being significantly beyond the aft limit. This miscalculation meant the aircraft's balance point was outside the approved range. The report explicitly stated that the pilot lost control of the airplane, and this loss of control was directly linked to the center of gravity position being beyond the approved limit.
Pilot's Condition and Duty Hours

While the report found no evidence of the pilot being under the influence of alcohol or drugs, it did suggest that the pilot was likely tired and suffering from a mild stomach disorder. This was supported by the fact that the pilot had already completed two flights earlier in the day and was on official duty for over 10 hours when the fatal flight commenced at 3:09 PM. The accident occurred at 3:42 PM, meaning the pilot had exceeded the company's duty period limit.
No Pre-Crash Defects or Malfunctions

The investigation meticulously examined the aircraft for any mechanical issues that could have contributed to the crash. It concluded that there was no evidence of any pre-crash defect or malfunction of the aircraft, its engine, or its service that acted as a causal factor. The aircraft was substantially damaged beyond repair by the impact forces and immersion in seawater, and the accident was deemed non-survivable.
Delayed Public Disclosure of Findings

The investigation report was presented to the Cabinet in March 1977, but its findings were not made public for nearly 47 years. This extended period of non-disclosure meant that the families of the victims remained unaware of the official cause of the tragedy for decades. The declassification process was prompted by a High Court order in March 2023, with the government subsequently agreeing to release the report.

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What were the key findings of the declassified 1977 crash report?

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